TY - JOUR
T1 - A bimetallic Ru-Co surface prepared by Ru3(CO)12 adsorption on Co(0001)
AU - Vaari, Jukka
AU - Lahtinen, J.
AU - Hautojärvi, Pekka
PY - 1996/2/1
Y1 - 1996/2/1
N2 - We have performed an XPS, TDS, ISS and LEED investigation on the adsorption of ruthenium carbonyl, Ru3(CO)12, on a Co(0001) surface. The adsorption of the carbonyl is molecular at 120 K and its dissociation occurs at 300 K via desorption of CO molecules. The desorption of CO is completed above 500 K, after which XPS and ISS indicate an atomically clean bimetallic surface, and LEED reveals a hexagonal (1 × 1) pattern. The ISS and XPS measurements as a function of Ru coverage indicate the formation of a surface alloy. The lattice constant of the alloy shifts from bulk Co value to bulk Ru value during the Ru deposition. The surface alloy formation is discussed in terms of a Monte Carlo simulation.
AB - We have performed an XPS, TDS, ISS and LEED investigation on the adsorption of ruthenium carbonyl, Ru3(CO)12, on a Co(0001) surface. The adsorption of the carbonyl is molecular at 120 K and its dissociation occurs at 300 K via desorption of CO molecules. The desorption of CO is completed above 500 K, after which XPS and ISS indicate an atomically clean bimetallic surface, and LEED reveals a hexagonal (1 × 1) pattern. The ISS and XPS measurements as a function of Ru coverage indicate the formation of a surface alloy. The lattice constant of the alloy shifts from bulk Co value to bulk Ru value during the Ru deposition. The surface alloy formation is discussed in terms of a Monte Carlo simulation.
KW - Carbon monoxide
KW - Carbonyl
KW - Cobalt
KW - Computer simulations
KW - Growth
KW - Low energy ion scattering (LEIS)
KW - Low index single crystal surfaces
KW - Ruthenium
KW - Thermal desorption spectroscopy
KW - X-ray photoelectron spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=0030081489&partnerID=8YFLogxK
U2 - 10.1016/0039-6028(95)00936-1
DO - 10.1016/0039-6028(95)00936-1
M3 - Article
AN - SCOPUS:0030081489
SN - 0039-6028
VL - 346
SP - 11
EP - 20
JO - Surface Science
JF - Surface Science
IS - 1-3
ER -